Back to results
US 5,966,106 AGranted
Driving circuit for an electro-luminescence element
AssigneeSeiko Precision Inc.
InventorHiroshi Yamazaki
Life of this patent
Estimating the term…
Abstract
There is provided a driving circuit for an EL element which extends the life of the EL element and has improved driving efficiency. A capacitor 11 is parallel-connected to a series circuit 3 formed by an EL element 1 and an inductor 2 to cause harmonic components and a driving frequency lower than the same to pass through the capacitor 11 and the EL element 1, respectively, to extend the life of the EL element and to improve driving efficiency.
Claims3
A driving circuit for an electro-luminescence (EL) element, comprising:
- a series circuit formed by an EL element and an inductor connected to said EL element in series;
- a switching circuit for causing a bi-directional current to flow through said series circuit to charge and discharge said EL element;
- and
- a capacitor provided in parallel with said series circuit for suppressing the application of frequency components higher than a driving frequency of said EL element by routing a current having high frequency components through said capacitor thereby suppressing the application of said current having high frequency components through said series circuit.
1 more element
Dependencies are inferred from the claim text.